Cumbernauld, Lanarkshire
Terraced house rear extension in Cumbernauld
Rear and side return extensions for terraces, with access through the house and two neighbours. If you live in Cumbernauld and want to know what a terraced house rear extension would cost and whether it needs planning, start with the online guide price or a free site visit.
Cumbernauld and its postcode districts G67 are part of our Lanarkshire coverage. Terraced streets make up much of the housing in parts of Lanarkshire, and most rear extensions here go in without side access.
Book a free site visit
Tell us about the house and we'll call to arrange a free, no-obligation visit.
How much does a terraced house rear extension cost in Cumbernauld?
In Cumbernauld, our guide for a terraced house rear extension is £1,950–£3,140 per square metre including VAT for a standard specification. Prices in Scotland sit a little below our West Midlands baseline; building warrant fees and drawings are budgeted separately.
| Size | Guide price inc VAT |
|---|---|
| 3 m wide × 4.5 m deep (13.5 m²) | £26,500–£42,500 |
| 3 m wide × 6 m deep (18 m²) | £35,000–£56,500 |
We put a fixed price in writing once the design is agreed, and explain any provisional sums such as foundations.
Do you need planning permission for a terraced house rear extension in Cumbernauld?
Planning for a terraced house rear extension in Cumbernauld follows the Scottish householder rules.
In Scotland a single-storey rear extension can be permitted development under Class 1A: eaves no higher than 3 metres and an overall height of 4 metres, and where any part is within 1 metre of a boundary it can project no more than 3 metres on a terraced house or 4 metres on other houses. The rights do not apply in conservation areas, and a building warrant is still needed before work starts.
Scotland has no Party Wall Act. Work to shared walls is governed by property law and the title deeds, so we agree access and protection with neighbours in writing before work begins.
Classes 1A and 1B do not apply in conservation areas, and listed buildings need listed building consent. At the first visit we measure what is there now and tell you which route fits: permitted development or a planning application, plus the building warrant.
What are homes in Cumbernauld like to extend?
Cumbernauld has sandstone villas and terraces, post-war semis and four-in-a-block flats. Flats need planning permission for an extension, and every project needs a building warrant before work starts.
How a terraced house rear extension in Cumbernauld comes together
Look round and measure
A free visit to see the back of the house, measure it, check the drains and boundaries and hear what you need.
Design and guide price
Two or three layout options with a guide price for each, so you choose the design knowing what it costs.
Approvals
Permitted development check or planning application, then building warrant drawings and structural calculations, plus a written agreement with neighbours for any shared-wall work.
Fixed price and build
A written price for the agreed design, a start date and a named contact through the build, ending with the accepted completion certificate.
Terraced house rear extensions near Cumbernauld
Close by, we work in Airdrie, about 5.6 miles away, and Coatbridge, about 6.0 miles away.
- Terraced house rear extension in Airdrie
- Terraced house rear extension in Coatbridge
- Terraced house rear extension in Kirkintilloch
- Terraced house rear extension in Viewpark
- Terraced house rear extension in Stenhousemuir
Other work in Cumbernauld:
FAQ
Terraced house rear extension questions in Cumbernauld
How much does a terraced house rear extension cost in Cumbernauld?
As a guide, £1,950–£3,140 per square metre including VAT for a standard specification. For example, 3 m wide × 4.5 m deep (13.5 m²): about £26,500–£42,500 at that rate. Your written price follows the survey.
Will I need a structural engineer?
Yes for the beam over the new opening and usually the foundations; we arrange them and their calculations go to building control.
Can you build without side access?
Yes. Materials come through the house in protected runs or over the roof by crane on tight sites.
Do you handle building control in Cumbernauld?
Yes. We apply for the building warrant before work starts and submit the completion certificate at the end.
Do I need planning permission for a rear extension in Cumbernauld?
Many single-storey rear extensions are permitted development under Class 1A, but not in conservation areas; you always need a building warrant before work starts.
Can I get a price without a visit?
Our online guide-price tool gives a range in a couple of minutes. A written price needs a survey.